Serving tray



FIG. 1 is a top perspective view of the serving tray;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing is for the purpose of illustrating theenvironment of the design and forms no part of the claimed design.

The ornamental design for a serving tray, as shown and described.